48 Sir Everard Home on the propagation^ &c. 
the ova imbedded in the yellov^^ granular substance of the 
ovarium, magnified loo diameters. 
Fig. 2. A transverse section of a portion of the oviduct; 
magnified 2 diameters. 
Fig. 3. A small portion of the inside of the oviduct, with 
some of the ova ready for emission ; magnified 20 diameters. 
Fig. 4. Several ova, of various sizes, extracted from the 
ovarium; magnified 100 diameters. 
Fig. 5. Ova, in the early state, extracted from the oviduct, 
and floating in water; magnified 100 diameters. 
Fig. 6 . Ova nearly ready for emission, extracted from the 
oviduct, and floating in water; at A is one just bursting its 
enclosing membrane or bladder ; magnified 100 diameters. 
Fig. 7. Some young muscles, just emitted, floating in water, 
where they are opening and closing in a very lively manner 
for several hours ; magnified 100 diameters. 
Fig. 8. Is the origin and progress of a singular worm, 
which is found within the oviduct of the muscle: originally 
it is an extremely minute globule, which is only to be distin¬ 
guished from the usual granular substance by a curious 
rotatory motion, which it performs incessantly until it becomes 
quite organised; and it attains sometimes the length of an 
inch; magnified 100 diameters. 
